Safety valve



Aug. 26, 1930; R. E. CHILDS 1,773,775

SAFETY A VALVE Filed Dec. ,28, 1929 valves for use in householdsemployingv Patented Aug.

BAY cnILDsoF nnrnufrfoxnnnoiun SAFETY Application 'meanecember agffiaza.serial Na'naas'.

`v The present invention relates safety .natural gas where-the pressure`decreases at times sufliciently tofextinguish flames and rises afterthe flame has'y extinguished so that the gas'escapes unless the variousvalves have been previously cut off which is frequently tri pose forwhich it is designed. y f With the above and numerous other objects inview, as will appear 'as thedescrptionneglected. y n

, The important object of theinvention is to provide a valve of thisnature which is ex-r ceedingly simple in construction, strong 4anddurable, inexpensive to manufacture, thore oughly eilicient and reliablein operation, comv pact, and otherwise well adapt-ed' for thepurproceeds, the invention resides yin certain novel features ofconstruction, and 1n the combination and `arrangement of parts as``casing with av partitionv 9 thereacross'having.

the valve seat v12v therein, on which isseatableV ball valve 8. Anexpansion tube Vrises from the casing 11, in communication therei withat one end and curves over .to extend downwardly and has pivotallyengaged on its extremity van adjustment arm l2, with which is pivotallyengaged va'rod 14 which extends down alongside the casing 11.4

The arm 2 is pivoted intermediate its ends with the extremity of thetube 1, asis indicated at 15, and vis pivotally engaged at oney end, asat 16, with a stationary. vpost xedto thev other side of the valvecasing and rising therefrom. l The arm 2 is connected tothe rodV 14` bymeans of the adjustable yoke 17. A lever 4 has an intermediate'portion'rockable in a bearing 5, and one arm to the outerf side of thecasing pivotallyengaged to the rod 14, and the other arm inside offthecas- 'casing so as ing, pivotally engaged with the yball valve 8. Athumb screw is threaded through astuifing box 6, in the vbottom of theVcasing, for the purpose of lifting the vball valveoff of the seat 12. Y

on the expansion tube-1, the ball 8 rdrops inv the seat 12. When thegascornes on again,

itV enters on top ofthe ball and holds the samein place, until theV ballis released by the thumb screw 7, allowingthe gas to enter the'expansiontube which raises the ball from the seat and holds the valveopen until the gas' goes oil" again, thus eliminating all danger fromexplosionor death from escaping gas.

After the gas comes on andthe valve 8 is re` leasedw bythe thumb screw,thefoperatorshould always be 'sure to turn the lthumb.'`

screw back down so asto be sure of'the valve working, the next time thepressure goesoff. e 1 I provide a cap 3 threaded in the topl of the toallow access to the interior thereof, andto permit the insertion andre-` `movalof the ballvalve 8. The advantage of using the ball valve inplace of a flat surface n valve is that 'theball valve operates` moreeiliciently and insures a perfectr cut off once it is seated. v

Great advantage'of this invention resides in its simplicity andcapability of being' mana ufactured at a very low cost, so that one ofthe valves may be used ineach household at a minimum amount of expense.It `isthought that the construction, operationvand advantages offtheinvention will now be quite apparent to those skilled in this art,withouta more detailed descriptionthereof'. y It ris apparent ythat'thechanges in the details ofk con- I l struction, and ingthelcombinationand arrangement of yparts'may be'resortedto, without departing from thespirit or scope ofthe invention as hereinafter claimed ork sacrifie# ingany of its advantages. f

Having thus described my invention, what Iclaimasnewis:4

A valve of the class described comprising Y Va casing with a partitionhaving a valve seat e therein, a ball yvalve seatable in the seat, a

lever engaged with the ballvalve and pivoty .55 Once they gas goes off,releasing pressure'y V ally engaged in the casing, a rod engaged withthe lever exteriorly of the casing, an expansion tube extending from thecasing and in communication with the interior thereof, means connectingthe rod with the expansion tube, a. screw threaded through the casingfor unseating the valve, a stationary bar fixed to the casing andextending therefrom, said means for connecting the rod With theexpansion tube comprising a lever pivoted on the stationary bar at oneend, pivoted intermediate its ends to the expansion tube and pivoted atits other end to said rod.

In testimony whereof I affix my signature.

RAY E. CHILDS.

